OpenAI: GPT-5.4

OpenAI's GPT-5.4, a unified frontier model released on March 5, 2026, demonstrates robust performance across a wide array of tasks, leveraging its expansive 1M+ token context window for high-context reasoning and multimodal analysis. The model consistently ranks among the fastest, achieving the 87th percentile in speed across 8 benchmarks, and offers moderate pricing, positioned at the 25th percentile. Notably, GPT-5.4 exhibits exceptional reliability with a perfect 100% success rate across all benchmarks, indicating minimal technical failures. In terms of specific performance, GPT-5.4 achieves perfect accuracy in Hallucinations (100%), General Knowledge (100%), and Ethics (100%), often being the most accurate model at its price point and speed in these categories. It shows strong capabilities in Instruction Following (83% accuracy, 91st percentile) and Reasoning (90% accuracy, 73rd percentile), highlighting its ability to handle complex directives and problem-solving. While its Coding accuracy (88%, 59th percentile) and Mathematics accuracy (89%, 55th percentile) are solid, they are not as dominant as its knowledge-based and ethical reasoning scores. The model also performs well in Email Classification (99% accuracy, 77th percentile). Its key strengths lie in its reliability, speed, and exceptional accuracy in critical areas like hallucination prevention, general knowledge, and ethical decision-making, making it a strong default for general-purpose tasks and software engineering.